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Utilization of lignocellulosic biomass towards the production of omega-3 fatty acids by the heterotrophic marine microalga Crypthecodinium cohnii
Industrial Biotechnology & Biocatalysis Group, School of Chemical Engineering, National Technical University of Athens.
Industrial Biotechnology & Biocatalysis Group, School of Chemical Engineering, National Technical University of Athens.
Chemical Process and Energy Resources Institute (CPERI), CERTH.
Industrial Biotechnology & Biocatalysis Group, School of Chemical Engineering, National Technical University of Athens.
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2020 (Engelska)Ingår i: Bioresource Technology, ISSN 0960-8524, E-ISSN 1873-2976, Vol. 303, artikel-id 122899Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

Omega-3 fatty acids have become a commodity of high nutritional and commercial value; intensive fishing and its environmental and social cost has led researchers to seeking alternative more sustainable ways of producing them. Heterotrophic microalgae such as Crypthecodinium cohnii, a marine dinoflagellate, have the ability to utilize various substrates and accumulate high amounts of docosahexaenoic acid (DHA). In this work, a mild oxidative organosolv pretreatment of beechwood pulps was employed that allowed up to 95% of lignin removal in a single stage, thus yielding a cellulose-rich solid fraction. The enzymatic hydrolysates were evaluated for their ability to support the growth and lipid accumulation of C. cohnii in batch and fed-batch cultures; the results verified the successful microalgae growth, while DHA reached up to 43.5% of the cell’s total lipids. The proposed bioprocess demonstrated the utilization of non-edible biomass towards high added value food supplements in a sustainable and efficient manner.

Ort, förlag, år, upplaga, sidor
Elsevier, 2020. Vol. 303, artikel-id 122899
Nyckelord [en]
Crypthecodinium cohnii, DHA, Lipid accumulation, Lignocellulosic biomass, Oxidative organosolv pretreatment
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Bioprocessteknik
Forskningsämne
Biokemisk processteknik
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URN: urn:nbn:se:ltu:diva-77907DOI: 10.1016/j.biortech.2020.122899ISI: 000516839600052PubMedID: 32028216Scopus ID: 2-s2.0-85078771060OAI: oai:DiVA.org:ltu-77907DiVA, id: diva2:1404753
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Validerad;2020;Nivå 2;2020-02-28 (alebob)

Tillgänglig från: 2020-02-28 Skapad: 2020-02-28 Senast uppdaterad: 2020-03-31Bibliografiskt granskad

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Topakas, Evangelos

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